Legacy ImageMagick Discussions Archive

I'm trying to extract the full palette table of an image using an 8-bit color depth. I have tried variations involving "-unique-colors" and "histogram:info:-", but both of these options reorder the color table and ignore duplicate colors in the table.

My ultimate goal is to create a color palette swatch in the shape of a 16x16 grid like in this mockup: http://www.thealmightyguru.com/Imagemag ... xample.png

I'm using Imagemagick 7 through a Windows 7 command line. Any help would be appreciated!

The only method I know is "identify -verbose" and process the text. I show a Windows BAT script for this at http://im.snibgo.com/ckbkClut.htm#getColormap.bat

I had to make some minor changes to have it work with the magick command of IM 7, but it did what I wanted it to do. I'll work at altering the output into the 16x16 image that I want.

Thanks for the reply snibgo. I have come across your site numerous times in the past looking for complex use of Imagemagick, and it's really impressive!

The script makes an image 256x1 pixels. Changing the script to directly make a 16x16 image is possible but tricky. Converting a 256x1 to 16x16 is easy: I've also scaled to make the pixels more visible.